<template>
  <div>
    <el-form ref="deptForm" label-width="120px" :rules="rules" :model="form">
      <el-form-item label="部门名称" prop="name">
        <el-input v-model="form.name" style="width:80%" placeholder="1-50个字符" />
      </el-form-item>
      <el-form-item label="部门编码" prop="code">
        <el-input v-model="form.code" style="width:80%" placeholder="1-50个字符" />
      </el-form-item>

      <el-form-item label="部门负责人" prop="manager">
        <el-select v-model="form.manager" style="width:80%" placeholder="请选择">
          <!-- <el-option value="1" :label="小美丽" />
            value: 选中之后保存在 form.manager 中的值
            label: 用户能看见选项内容
          -->
          <el-option
            v-for="employee in employees"
            :key="employee.id"
            :label="employee.username"
            :value="employee.username"
          />
        </el-select>
      </el-form-item>

      <el-form-item label="部门介绍" prop="introduce">
        <el-input v-model="form.introduce" style="width:80%" placeholder="1-300个字符" type="textarea" :rows="3" />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" size="small" @click="hSubmit">确定</el-button>
        <el-button size="small" @click="hCancel">取消</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import { addDepartments, getDepartDetail, updateDepartments, getEmployeeSimple } from '@/api/departments'
export default {
  props: {
    id: {
      type: String,
      required: true
    },
    isEdit: {
      type: Boolean,
      required: true
    },
    originList: {
      type: Array,
      required: true
    }
  },
  data() {
    const validCode = (rule, value, callback) => {
      let existedCodeList = this.originList.map(item => item.code)
      if (this.isEdit) {
        existedCodeList = this.originList.filter(item => item.id !== this.id).map(item => item.code)
      }
      console.log('被占用的code列表', existedCodeList)
      existedCodeList.includes(value) ? callback(`部门编码${value}已被占用`) : callback()
    }
    const validName = (rule, value, callback) => {
      let existedNameList = this.originList.filter(item => item.pid === this.id).map(item => item.name)
      if (this.isEdit) {
        const dept = this.originList.find(item => item.id === item.curId)
        existedNameList = this.originList.filter(item => item.pid === dept.pid && item.id !== this.id).map(item => item.name)
      }
      existedNameList.includes(value) ? callback(`部门名字${value} 已被占用`) : callback()
    }
    return {
      employees: [],
      form: {
        name: '', // 部门名称
        code: '', // 部门编码
        manager: '', // 部门管理者
        introduce: '' // 部门介绍
      },
      rules: {
        name: [
          { required: true, message: '部门名称不能为空', trigger: 'blur' },
          { min: 1, max: 50, message: '部门名称要求1-50个字符', trigger: 'blur' }, {
            validator: validName, trigger: 'blur'
          }
        ],
        code: [
          { required: true, message: '部门编码不能为空', trigger: 'blur' },
          { min: 1, max: 50, message: '部门编码要求1-50个字符', trigger: 'blur' },
          {
            validator: validCode, trigger: 'blur'
          }
        ],
        manager: [
          { required: true, message: '部门负责人不能为空', trigger: 'blur' }
        ],
        introduce: [
          { required: true, message: '部门介绍不能为空', trigger: 'blur' },
          { min: 1, max: 300, message: '部门介绍要求1-300个字符', trigger: 'blur' }
        ]
      }
    }
  },
  // 监听每次的编辑
  // watch: {
  //   id(newVal, oldVal) {
  //     console.log('id变化了', oldVal, '--->', newVal)
  //     this.loadDetail()
  //   }
  // },
  created() {
    this.loadEmployees()
    this.loadDetail()
  },
  methods: {
    // 获取当前部门的详情
    async loadDetail() {
      if (this.isEdit) {
        // alert('现在是编辑，要去获取详情')
        const res = await getDepartDetail(this.id)
        console.log('现在是编辑，要去获取详情', res)
        this.form = res.data
      }
    },
    async loadEmployees() {
      try {
        const res = await getEmployeeSimple()
        console.log('获取员工信息', res)
        this.employees = res.data
      } catch (err) {
        console.log(err)
      }
    },
    async doAdd() {
      // 组装参数. this.id是父组件传入的prop
      const res = await addDepartments({ ...this.form, pid: this.id })
      console.log(res)
      this.$emit('update-depart')
    },
    async doEdit() {
      try {
        await updateDepartments(this.form)
        this.$message({ type: 'success', message: '修改成功' })
        this.$emit('update-depart')
      } catch (err) {
        console.log(err)
        this.$message({ type: 'error', message: err })
      }
    },
    hSubmit() {
      // 先省略表单验证
      // 根据 isEdit的值，决定做保存还是添加
      // if (this.isEdit) {
      //   this.doEdit()
      // } else {
      //   this.doAdd()
      // }

      //   手动兜底校验
      this.$refs.deptForm.validate(valid => {
        if (valid) {
          this.isEdit ? this.doEdit() : this.doAdd()
        }
      })
    },
    hCancel() {
      // resetFields是element-ui中的el-form组件提供的一个api，作用
    //   1.重置表单数据
    //   2.清空校验结果
    //   this.$refs.deptForm.resetFields()
      this.$emit('close')
    }
  }
}
</script>
